Belimo LRX User manual

INSTRUCTION MANUAL

LRX, NRX, ARX, AKRX Actuators

with Electronic Pressure Independent Valves (ePIV)

71613-00001.C

WIRING DIAGRAM

LRX, NRX, ARX, AKRX

2 to 10 VDC Flow Feedback Signal (+)

2 to 10 VDC control signal for Non-Spring Return and

Electronic Fail-Safe

4 to 20 mA control signal for Non-Spring Return and

Electronic Fail-Safe

Line

Volts

(–)

(+)

Blk (1) Common

Red (2) Hot +

Wht (3) Y Input

Org (5) U Output

Position

Feedback VDC

1 2

24 VAC Transformer

2 to 10 VDC control signal for Non-Spring Return and

Electronic Fail-Safe

Floating Control Signal

BLK

Black

Negro

Noir

Preto

RED

Red

Rojo

Rouge

Vermelho

WHT

White

Blanco

Blanc

Branco

ORG

Orange

Anaranjado

Orange

Alaranjado

1Provide overload protection and disconnect as required.

2CAUTION Equipment damage!

Actuators may be connected in parallel.

Power consumption and input impedance must be observed.

21 IN4004 or IN4007 diode required.

Meets UL requirements without the need of an electrical ground connection.

Subject to change. © Belimo Aircontrols (USA), Inc.

INSTRUCTION MANUAL

LRX, NRX, ARX Modbus Actuators

with Electronic Pressure Independent Valves (ePIV)

24 VAC/DC Transformer

Line

Volts

Blk (1) Common

Red (2) + Hot

Wht (3)

Org (5)

Pnk (6)

Gry (7)

MFT

D-

D+

Modbus (RS-485)

24 VAC/DC Transformer

Line

Volts

Blk (1) Common

Red (2) + Hot

Wht (3)

Org (5)

Pnk (6)

Gry (7)

MFT

D-

D+

Modbus (RS-485)

Δp

Modbus control for Non-Spring Return Modbus control with switching contact for Non-Spring Return

Note:

Modbus signal assignment:

C1= D- = A

C2= D+ = B

Power supply and communication are not

galvanically isolated.

Interconnect ground signal of the devices.

Requirements for switching contact:

The switching contact must be able to accurately switch a current of

16 mA at 24 V.

24 VAC/DC Transformer

Line

Volts

Blk (1) Common

Red (2) + Hot

Wht (3)

Org (5)

Pnk (6)

Gry (7)

MFT

D-

D+

Modbus (RS-485)

24 VAC Transformer

Line

Volts

Blk (1) Common

Red (2) + Hot

Wht (3)

Org (5)

Pnk (6)

Gry (7)

MFT

D-

D+

Modbus (RS-485)

OPEN



max

CLOSED

Bus mode

Modbus control with active sensor for Non-Spring Return Modbus control with local override (AC only, analogue override)

for Non-Spring Return

Possible input voltage range:

0...32 V (resolution 30 mV)

Note:

If no sensor is integrated, then connection 3 (Y) is available for the protective

circuit of a local override control. Options: CLOSED, Vmax, OPEN

BLK

Black

Negro

Noir

Preto

RED

Red

Rojo

Rouge

Vermelho

WHT

White

Blanco

Blanc

Branco

ORG

Orange

Anaranjado

Orange

Alaranjado

PNK

Pink

Rosado

Rosa

Cor-de ros

GRY

Gray

Gris

Cinza

WIRING DIAGRAM

ModBus Actuators - LRX, NRX, ARX

71613-00001.C

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